So far my thoughts are running along the same lines... but I could always be wrong.My two cents worth has the Kelvin with over/under nacelles sporting blue/red ram scoops. The blue "eye" on top is pretty much what you'd expect those turbine ramscoops on the trailer 1701 would look like when run up and opertional. As I've said in another thread, dual colour scoops could mean segregated functions in the gas collection cycle (ie. ionize/collect).
Nice to have someone thinking along the same lines, though as you say, we may be the ones off the mark. The alternate idea that the Kelvin has only one ventral nacelle and a big deflector hoisted up well above the main saucer is, well, truly "fugly" IMO, both in looks and possibly dynamics.